Subsystems / Cannon / Gryazev-Shipunov GSh-23

Gryazev-Shipunov GSh-23

General Facts

  • TYPE
    Autocannon

  • ORIGIN
    USSR

  • NICKNAMES
    GS-23 (Romanian production)

  • DESIGNED
    Early 1960's

  • DESIGNER
    KBP Instrument Design Bureau

  • PRODUCTION
    1965 - present

  • PRODUCERS
    India - OFB
    Romania - Cugir arsenal
    Russia - ZID
    USSR - ZID

  • QUANTITY
    Several thousand

  • UNIT COST
    Unknown

  • CHARACTERISTICS
    High rate of fire
    Instant maximum rate of fire
    Limited weight
    Reliable
    Low muzzle velocity

Introduction

The GSh-23 is an autocannon of Soviet origin. It was designed in the early 1960's as a replacement for the older NR-23. The GSh-23 has a much higher rate of fire. This is a virtue in jet aircraft since time on target is lower, but comes at the cost of recoil and running out of ammunition quickly.

Design

The GSh-23 functions on the Gast principle. In this twin barrel setup the recoil from one barrel cycles the action of the other, allowing for an instant high rate of fire. The GSh-23 is belt fed from a single belt. The GSh-23L adds a muzzle brake that helps reduce recoil. Both GSh-23 and GSh-23L are solenoid fired.

Firepower

The GSh-23 fires the 23x115mm round that is also widely used in other Soviet aircraft cannon. The rate of fire is 3.000 to 3.400 rpm and is instantly achieved as opposed to Gatling type weapons. The muzzle velocity of 715 m/s is low compared to other modern aircraft cannon.

Platforms

The GSh-23 was introduced on the MiG-21. First in the GP-9 pod and later in semi-recessed form. It is also used on many versions of the MiG-23 and foreign aircraft such as the J-22 Orao, IAR-93 Vultur and Tejas. The GSh-23 arms the UPK-23 and SPPU-22 gun pod. Additionally the GSh-23 is used as a tail gun in Tu-22M and Tu-95 bombers and Il-76M transport aircraft.

Variants

GSh-23

GSh-23: Original production model without muzzle brake. Produced in smaller numbers than GSh-23L
GSh-23L: GSh-23 with multi-slotted muzzle brake which reduces recoil.

TypeAutocannon
Caliber23x115mm AM-23
MechanismGas operated, Gast principle
BarrelTwin barrel, 1.000 m, rifled, 10 grooves, 575 mm right hand twist
Dimensions1.537 m long, 165 mm wide, 168 mm tall
Weight49.2 kg
FeedingSingle belt feed
Rate of fire3.000 - 3.400 rpm
Muzzle velocity700 - 730 m/s
Recoil?
Remarks-
TypeAutocannon
Caliber23x115mm AM-23
MechanismGas operated, Gast principle
BarrelTwin barrel, 1.000 m, rifled, 10 grooves, 575 mm right hand twist
Dimensions1.387 m long, 165 mm wide, 168 mm tall
Weight50 kg
FeedingSingle belt feed
Rate of fire3.000 - 3.400 rpm
Muzzle velocity700 - 730 m/s
Recoil2.900 kg recoil force
RemarksMuzzle brake

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